Teachers. As children, we loved to hate them.
And some adults are still proving to hate them, as Twitter user Marie Lum recently discovered.
Over 6000 people have shared the scarring experiences they've had with teachers, and some are just damn right hilarious.
The LA-based animator asked her Twitter followers, "What's something a teacher did that still makes you mad?" and boy did she get a response, reports News.com.au.